Source code for qubesadmin.tools.qvm_features

# coding=utf-8
#
# The Qubes OS Project, https://www.qubes-os.org/
#
# Copyright (C) 2010-2016  Joanna Rutkowska <[email protected]>
# Copyright (C) 2016       Wojtek Porczyk <[email protected]>
# Copyright (C) 2017       Marek Marczykowski-Górecki
#                                           <[email protected]>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#

'''qvm-features - Manage domain's features'''

from __future__ import print_function

import sys

import qubesadmin
import qubesadmin.tools

parser = qubesadmin.tools.QubesArgumentParser(
    vmname_nargs=1,
    description='manage domain\'s features')

parser.add_argument('feature', metavar='FEATURE',
    action='store', nargs='?',
    help='name of the feature')

parser.add_argument('value', metavar='VALUE',
    action='store', nargs='?',
    help='new value of the feature')

parser.add_argument('--unset', '--default', '--delete', '-D',
    dest='delete',
    action='store_true',
    help='unset the feature')


[docs]def main(args=None, app=None): '''Main routine of :program:`qvm-features`. :param list args: Optional arguments to override those delivered from \ command line. ''' args = parser.parse_args(args, app=app) vm = args.domains[0] if args.feature is None: if args.delete: parser.error('--unset requires a feature') try: features = [(feat, vm.features[feat]) for feat in vm.features] qubesadmin.tools.print_table(features) except qubesadmin.exc.QubesException as e: parser.error_runtime(e) elif args.delete: if args.value is not None: parser.error('cannot both set and unset a value') try: del vm.features[args.feature] except KeyError: pass except qubesadmin.exc.QubesException as e: parser.error_runtime(e) elif args.value is None: try: print(vm.features[args.feature]) return 0 except KeyError: return 1 except qubesadmin.exc.QubesException as e: parser.error_runtime(e) else: try: vm.features[args.feature] = args.value except qubesadmin.exc.QubesException as e: parser.error_runtime(e) return 0
if __name__ == '__main__': sys.exit(main())